-City-Mart Is the Only Employer of Sales Clerks in Panburg

-City-Mart is the only employer of sales clerks in Panburg. In the figure above S is the labor supply curve faced by City-Mart, VMP is City-Mart's value of marginal product curve, and MCL is its marginal cost of labor curve. If the market for sales clerks' labor in Panburg were competitive, the wage rate would be ________ per hour, and ________ hours of labor would be hired.

A) $9; 90
B) $12; 60
C) $6; 90
D) $6; 60